Script was written by his brother, and Spielberg was previously attached.

Quote:

Originally Posted by The Hollywood Reporter

With his Batman trilogy now complete, Christopher Nolan has found his next project.

According to multiple sources, Nolan has set his sights on a sci-fi project titled Interstellar, which he is in talks to direct and produce. The project involves time travel and alternate dimensions in a story that sees a group of explorers travel through a wormhole. The script is based on scientific theories developed by a Kip Thorne, a theoretical physicist, a gravitational physicist and astrophysicist at Caltech.

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The script for Interstellar was written by Jonathan Nolan, Chris' brother, who worked on The Dark Knight Rises and The Dark Knight, as well as Prestige. Jonathan Nolan (known as Jonah) also has a "story by" credit for Memento, Chris Nolan’s breakout movie.

Steven Spielberg was previously attached to direct Interstellar and produce with Lynda Obst. It is unclear if Spielberg will remain involved, especially considering the director's planned next movie, Robopocalypse, was delayed indefinitely on Wednesday.